Answer: B
Explanation:
X-rays coming into Earth's system from space are absorbed by the atmosphere. Telescopes that processes X-rays, therefore, are placed in orbit above the atmosphere
Answer:
2.210N
Explanation:
Workdone = Force x distance
Distance = 38m , Workdone = 84J
Hence 84J = Force x 38m
Force = 84J / 38m
Force = 2.210N =2.2N
An atom's mass number equals the number of protons plus the number of neutrons.
Hope this helps! (:
vf ^2 = kx^2/m = 56(0.75)^2 / 2.5 = 12.6
Therefore, v= 3.5 m/s.
The added weight of the sand puts more downward pressure on the wheels contacting the rails, which would cause the trains speed to decrease.